Why there is an 'SerializationException: serializationStream supports seeking, but its length is 0' error when I click the load button?

I am creating a clicker game but I get stuck in the SaveLoad script. I tried to run the game. When I click the save button, it saves a data into my computer. But when I click the load button, the following error occurs:

  SerializationException: serializationStream supports seeking, but its length is 0
     System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.NoCheckDeserialize (System.IO.Stream serializationStream, System.Runtime.Remoting.Messaging.HeaderHandler handler) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Runtime.Serialization.Formatters.Binary/BinaryFormatter.cs:155)
     System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize (System.IO.Stream serializationStream) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Runtime.Serialization.Formatters.Binary/BinaryFormatter.cs:136)
     SaveLoad.Load () (at Assets/Script/SaveLoad.cs:26)
     StatsManager.Load () (at Assets/Script/StatsManager.cs:23)
     UnityEngine.Events.InvokableCall.Invoke (System.Object[] args) (at C:/buildslave/unity/build/Runtime/Export/UnityEvent.cs:153)
     UnityEngine.Events.InvokableCallList.Invoke (System.Object[] parameters) (at C:/buildslave/unity/build/Runtime/Export/UnityEvent.cs:634)
     UnityEngine.Events.UnityEventBase.Invoke (System.Object[] parameters) (at C:/buildslave/unity/build/Runtime/Export/UnityEvent.cs:769)
     UnityEngine.Events.UnityEvent.Invoke () (at C:/buildslave/unity/build/Runtime/Export/UnityEvent_0.cs:53)
     UnityEngine.UI.Button.Press () (at C:/buildslave/unity/build/Extensions/guisystem/UnityEngine.UI/UI/Core/Button.cs:35)
     UnityEngine.UI.Button.OnPointerClick (UnityEngine.EventSystems.PointerEventData eventData) (at C:/buildslave/unity/build/Extensions/guisystem/UnityEngine.UI/UI/Core/Button.cs:44)
     UnityEngine.EventSystems.ExecuteEvents.Execute (IPointerClickHandler handler, UnityEngine.EventSystems.BaseEventData eventData) (at C:/buildslave/unity/build/Extensions/guisystem/UnityEngine.UI/EventSystem/ExecuteEvents.cs:52)
     UnityEngine.EventSystems.ExecuteEvents.Execute[IPointerClickHandler] (UnityEngine.GameObject target, UnityEngine.EventSystems.BaseEventData eventData, UnityEngine.EventSystems.EventFunction`1 functor) (at C:/buildslave/unity/build/Extensions/guisystem/UnityEngine.UI/EventSystem/ExecuteEvents.cs:269)
     UnityEngine.EventSystems.EventSystem:Update()
 

My SaveLoad code is here:

 using UnityEngine;
 using System.Collections;
 using System.Collections.Generic;
 using System.Runtime.Serialization.Formatters.Binary;
 using System.IO;
 
 public static class SaveLoad
 {
 
     public static void Save(StatsManager stats) {
 
         BinaryFormatter bf = new BinaryFormatter();
         FileStream stream = new FileStream(Application.persistentDataPath + "/playerData.sav", FileMode.Create);
 
         PlayerData data = new PlayerData(stats);
 
         bf.Serialize(stream, data);
         stream.Close();
     }
 
     public static float[] Load() {
         if (File.Exists(Application.persistentDataPath + "/playerData.dat")){
             BinaryFormatter bf = new BinaryFormatter();
             FileStream stream = new FileStream(Application.persistentDataPath + "/playerData.dat", FileMode.Open);
 
             PlayerData data = bf.Deserialize(stream) as PlayerData;
             stream.Close();
 
             return data.gameStats;
         }
         else {
             Debug.LogError("File does not exist!");
             return new float[4];
         }
     
     }
 }
 
 [System.Serializable]
 public class PlayerData {
 
     public float[] gameStats;
 
     public PlayerData(StatsManager stats) {
         gameStats = new float[4];
         gameStats[0] = stats.cash;
         gameStats[1] = stats.cpc;
         gameStats[2] = stats.resetBonus;
         gameStats[3] = stats.resetPower;
     }
 }

And the StatsManager code:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class StatsManager : MonoBehaviour {
     public float cash;
     public float cpc = 1;
     public float resetBonus = 1;
     public float resetPower;
     public Click click;
 
     void Update() {
         click.CashDisplay.text = "$" + CurrencyConverter.Instance.GetCurrencyIntoString(cash, false, false);
         click.cpc.text = "$" + CurrencyConverter.Instance.GetCurrencyIntoString(cpc, false, true);
         click.PowerDisplay.text = "Prestige Power: " + CurrencyConverter.Instance.GetCurrencyIntoString(resetPower, false, false) + "\n(x" + CurrencyConverter.Instance.GetCurrencyIntoString(resetBonus, false, false) + " Multiplier)";
     }
 
     public void Save() {
         SaveLoad.Save(this);
     }
 
     public void Load() {
         float[] loadedStats = SaveLoad.Load();
 
         cash = loadedStats[0];
         cpc = loadedStats[1];
         resetBonus = loadedStats[2];
         resetPower = loadedStats[3];
     }
 
 
 }

How can I solve this problem? Thank you!